USN-2380-1: Bash vulnerabilities

Releases

• Ubuntu 14.04 ESM
• Ubuntu 12.04
• Ubuntu 10.04

Packages

• bash - The GNU Bourne Again SHell

Details

Michal Zalewski discovered that Bash incorrectly handled parsing certain
function definitions. If an attacker were able to create an environment
variable containing a function definition with a very specific name, these
issues could possibly be used to bypass certain environment restrictions
and execute arbitrary code. (CVE-2014-6277, CVE-2014-6278)

Please note that the previous Bash security update, USN-2364-1, includes
a hardening measure that prevents these issues from being used in a
Shellshock attack.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04

• bash - 4.3-7ubuntu1.5

Ubuntu 12.04

• bash - 4.2-2ubuntu2.6

Ubuntu 10.04

• bash - 4.1-2ubuntu3.5

In general, a standard system update will make all the necessary changes.

References

• CVE-2014-6277
• CVE-2014-6278